The 6 Best Sleep Sacks, Tested and Reviewed by Parents

Mar. 15, 2025

In This ArticleView AllIn This ArticleOur Top PicksReviewsWhat to KnowBehind the ScenesFAQWhy Trust PEOPLEWhat Is People Tested?

In This ArticleView All

In This Article

View All

Our Top Picks

Reviews

What to Know

Behind the Scenes

FAQ

Why Trust PEOPLE

What Is People Tested?

Photo:People / Jessica Juliao

People / Jessica Juliao

Experts Say

Keep reading to discover the best sleep sacks of 2024.

Best Overall:Primary Muslin Sleep Sack at Primary.comJump to Review

Best Overall:Primary Muslin Sleep Sack at Primary.com

Best Overall:

Best Swaddle:HALO Micro-fleece SleepSack Swaddle at Amazon$30Jump to Review

Best Swaddle:HALO Micro-fleece SleepSack Swaddle at Amazon$30

Best Swaddle:

Best with Zipper:Copper Pearl Sleep Bag at Amazon$45Jump to Review

Best with Zipper:Copper Pearl Sleep Bag at Amazon$45

Best with Zipper:

Best Spacious:

Best Bamboo:Gunamuna Sleep Sack at Amazon$55Jump to Review

Best Bamboo:Gunamuna Sleep Sack at Amazon$55

Best Bamboo:

Best Investment:Little Giraffe Stretch Chenille Dreamsack at Littlegiraffe.comJump to Review

Best Investment:Little Giraffe Stretch Chenille Dreamsack at Littlegiraffe.com

Best Investment:

Best OverallPrimary Muslin Sleep SackPHOTO: PrimaryView on Primary.com

Best OverallPrimary Muslin Sleep Sack

Best Overall

Primary Muslin Sleep Sack

PHOTO: Primary

View on Primary.com

Soft, lightweight cotton fabric

Washes well and didn’t shrink

Red FlagsRuns a bit small

Runs a bit small

This sleep sack got a perfect score in our tests, which was used on a toddler several times for sleeping. Said toddler loved the colors and was so excited about his rainbow sleep sack.

Highly comfortable, lightweight, and made of 100 percent cotton, this sleep sack is great for summer. We found it to be very soft against skin but also thin — it’s more like a top sheet than a quilt if we were comparing it to adult blankets. The zipper runs the length of the sleep sack, from the bottom up to the neckline, and it’s covered in fabric on the inside so the wearer won’t feel the zipper from the inside while rolling around in their sleep, which we thought was a nice touch.

Closure:Zipper |Colors:1 |Material:100% cotton muslin |Sizes:0-6, 6-12, 12-18, 18-24

Best SwaddleHALO Micro-fleece SleepSack SwaddlePHOTO: Amazon$30 at Amazon$30 at Target$30 at Walmart

Best SwaddleHALO Micro-fleece SleepSack Swaddle

Best Swaddle

HALO Micro-fleece SleepSack Swaddle

PHOTO: Amazon

$30 at Amazon$30 at Target$30 at Walmart

Star QualitiesVersatile as a swaddle or a sleep sackHandy instructions sewn into the swaddleRed FlagsMicro-fleece fabric may not be the best option in warmer climates

Star QualitiesVersatile as a swaddle or a sleep sackHandy instructions sewn into the swaddle

Versatile as a swaddle or a sleep sack

Handy instructions sewn into the swaddle

Red FlagsMicro-fleece fabric may not be the best option in warmer climates

Micro-fleece fabric may not be the best option in warmer climates

As the tester was transitioning their daughter from a swaddle to a sleep sack, they started her off with swaddling one arm and leaving one arm out, and this has so far been the only swaddle that she didn’t break out of, thanks to a very big velcro flap that keeps her arm in place. She now uses it as a sleep sack, with both arms out.

Thick and sturdy, it washed well, and we found it to be a great value at its price point — particularly since it’s a product that grows with your child and has so much versatility.

Closure:Zipper and velcro |Colors:21 |Material:Micro-fleece |Sizes:Preemie, Newborn, Small, Medium

Best with ZipperCopper Pearl Sleep BagPHOTO: Amazon$45 at Amazon$32 at TargetView on Copperpearl.com

Best with ZipperCopper Pearl Sleep Bag

Best with Zipper

Copper Pearl Sleep Bag

$45 at Amazon$32 at TargetView on Copperpearl.com

Star QualitiesIncredibly soft jersey materialEasy to use, down to the care instructions printed on the outsideUnzips from the bottom, making it easy to change diapersRed FlagsHas a higher price point than most of our other winnersLikely too warm for hotter climates

Star QualitiesIncredibly soft jersey materialEasy to use, down to the care instructions printed on the outsideUnzips from the bottom, making it easy to change diapers

Incredibly soft jersey material

Easy to use, down to the care instructions printed on the outside

Unzips from the bottom, making it easy to change diapers

Red FlagsHas a higher price point than most of our other winnersLikely too warm for hotter climates

Has a higher price point than most of our other winners

Likely too warm for hotter climates

Closure:Zipper |Colors:11 prints |Material:Polyester/rayon blend |Sizes:0-6 months

Best Spacious

Built to last and for many months of wear in each size

Snaps on shoulder for easy dressing

Red FlagsLikely too warm for hotter climates

Closure:Zipper and snaps |Colors:8 |Material:100% cotton shell, 100% polyester filling |Sizes:0-6, 6-18, 18-26 months

Best BambooGunamuna Sleep SackPHOTO: Amazon$55 at Amazon$55 at TargetView on Maisonette.com

Best BambooGunamuna Sleep Sack

Best Bamboo

Gunamuna Sleep Sack

$55 at Amazon$55 at TargetView on Maisonette.com

Star QualitiesCloud-like bamboo materialZip-around design on the bottom makes for easy diaper changesRed FlagsLikely too warm for summer months or hotter climatesPricier than many others we tested

Star QualitiesCloud-like bamboo materialZip-around design on the bottom makes for easy diaper changes

Cloud-like bamboo material

Zip-around design on the bottom makes for easy diaper changes

Red FlagsLikely too warm for summer months or hotter climatesPricier than many others we tested

Likely too warm for summer months or hotter climates

Pricier than many others we tested

While not a budget option, it’s made with quality material, is incredibly warm and cozy, and seems durable enough to last a long time.

Closure:Zipper, shoulder snaps |Colors:22 |Material:Bamboo rayon |Sizes:3-9, 9-18, 18-24, 24-36 months

People / Tamara Staples

Best InvestmentLittle Giraffe Stretch Chenille DreamsackPHOTO: Bloomindale’sView on Littlegiraffe.comView on Maisonette.com$71 at Bloomingdales

Best InvestmentLittle Giraffe Stretch Chenille Dreamsack

Best Investment

Little Giraffe Stretch Chenille Dreamsack

PHOTO: Bloomindale’s

View on Littlegiraffe.comView on Maisonette.com$71 at Bloomingdales

Star QualitiesMade of the coziest chenille fabricSturdy and washes well while maintaining its delicate feelRed FlagsHighest price point of all our winnersSnaps are quite strong; would have preferred a full-length zipper

Star QualitiesMade of the coziest chenille fabricSturdy and washes well while maintaining its delicate feel

Made of the coziest chenille fabric

Sturdy and washes well while maintaining its delicate feel

Red FlagsHighest price point of all our winnersSnaps are quite strong; would have preferred a full-length zipper

Highest price point of all our winners

Snaps are quite strong; would have preferred a full-length zipper

The sleep sack is well-made and very sturdy, maintains its softness after washing. We were afraid the chenille would look matted after the wash, but that didn’t happen. This option comes equipped with a zipper down the front and four snaps on top, and the latter was the only issue we had when testing this sleep sack. We thought it would make more sense if the zipper just continued to the top; since the snaps are so strong, it was sometimes easier just to leave them undone.While this is on the higher end for a sleep sack, we feel like it’s luxurious enough that it’s worth the splurge.

Closure:Zipper and snaps |Colors:Pink, Blue, Cream |Material:100% polymicrofiber |Sizes:0-6 months

Size

Pricing

Safety and Development

“I like sacks with lots of room in the hip so babies can frog-leg their hips wide open — that’s the safest for babies,” says Dr. Karp. “And you’ll want to make sure that your little one’s sleep sack is free of any would-be choking or strangulation hazards, like loose ribbons or buttons.”

Material

Comfort

Our PEOPLE team evaluated 19 sleep sacks, using them on our own babies and toddlers, washing them based on the care instructions, and inspecting every inch of the fabric and features. We scored each product on a 1-5 scale against four categories: comfort, ease of use, durability, and overall value.

These scores were considered along with the commentary about each product in determining our winners. Fabric, care instructions, and size/weight limits were factored in to the evaluations, as well. The scores with the highest averages made it to this list of PEOPLE winners.

Frequently Asked Questions

Pinckney Rutherford agrees. “Not only are sleep sacks a great way to keep babies warm at night, but they also confine the legs of curious older babies that would love any opportunity to try to climb their crib," she adds.

Dumaplin advises to look at the TOG rating for sleep sacks, which stands for thermal overall grade. “Sleep sacks are safe when they are the appropriate TOG rating or thickness for the temperature of the room and when they fit properly, " says Dumaplin.

Dumaplin recommends looking for three things when it comes to sleep sack fit. “First, be sure that little legs, hips, and feet can move freely," she says. “Second, you want to be sure that the neck of the sleep sack fits securely, preventing it from coming up over the nose or mouth. And finally, ensure that the arm holes are not so loose that arms can sneak into the body of the sleep sack.”

Our Expert Panel

We created the PEOPLE Tested seal of approval to help you find the very best products for your life. We use our unique methodology to test products in three labs across the country and with our network of home testers to determine their effectiveness, durability, ease of use, and so much more. Based on the results, we rate and recommend products so you can find the right one for your needs.

In short, PEOPLE Tested provides recommendations you can trust — every day, every purchase.

Up Next:The 8 Best Double Strollers of 2023, Tested and Reviewed

source: people.com